You don't seem to understand the power a 2W laser packs. PPE not really necessary if you're "very careful" and basically only a recommendation? There is no MPE with class 4 lasers, but heh, you can just ignore that. Still waiting on you to explain to me how you'll keep yourself and those around you safe, especially with regards to IR bleed through.
Now, with all this, if you don't understand how you can get slapped by anything between public nuisance charge and felonious assault, depending on the recklessness you show, the injuries you inflict and the rest of the context of any incident bound to happen unless you take that 2W laser extremely fucking seriously, I don't know what to tell you.
Look, we understand perfectly how much power a 2W laser packs. It's 2 watts (duh!). The naked lightbulb right on top of me is 30 times as powerful and I don't see the OSHA and FBI busting down my door anytime soon. Heck, my mining rig consumes around 20 kiloWatts, now that is some power. I had to replace my blown fuses with a couple of screwdrivers but it is fine because I did it very carefully and won't be shining any laser at the breaker box (also, the handle of the screwdrivers is made of wood). Sometimes sparks fly out, I did my research and that means that my rig found a good hash and is celebrating.